49447728 has 240 divisors, whose sum is σ = 167132160. Its totient is φ = 13478400.

The previous prime is 49447703. The next prime is 49447729. The reversal of 49447728 is 82774494.

Its product of digits (451584) is a multiple of the sum of its prime factors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49447729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 932950 + ... + 933002.

It is an arithmetic number, because the mean of its divisors is an integer number (696384).

Almost surely, 2^49447728 is an apocalyptic number.

49447728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49447728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83566080).

49447728 is an abundant number, since it is smaller than the sum of its proper divisors (117684432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49447728 is a wasteful number, since it uses less digits than its factorization.

49447728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 119 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 49447728 is about 7031.9078492256. The cubic root of 49447728 is about 367.0417333817.

The spelling of 49447728 in words is "forty-nine million, four hundred forty-seven thousand, seven hundred twenty-eight".